//图片滚动速度
var speed = 200;
//获取需要处理的DOM元素
var scroll_begin = document.getElementById("scroll_begin");
var scroll_end = document.getElementById("scroll_end");
var scroll_box = document.getElementById("scroll_box");

//复制图片元素
scroll_end.innerHTML = scroll_begin.innerHTML;

//设置滚动区域
scroll_box.scrollLeft=0;

function marquee() {
    if(scroll_box.scrollLeft >=scroll_end.offsetWidth){
        scroll_box.scrollLeft-=scroll_begin.offsetWidth;
    }else{
        scroll_box.scrollLeft++;
    }
}

//定时滚动
setInterval(marquee,speed);

//鼠标事件
scroll_box.addEventListener(
    "mou"
)